Abstract
This article reports on the optical absorption and photoluminescence analysis of different concentrations of Dy3+ ions doped cadmium bismuth borate (CdBiB) glasses prepared by melt quenching method. The emission spectra of Dy3+: CdBiB glasses have shown a yellow emission at 574 nm (4F9/2 → 6H13/2). The emission intensity was maximum for 1.0 mol% of Dy3+: CdBiB glass and after this optimum concentration, the phenomenon of concentration quenching was observed. From the absorption spectrum, by applying the J-O theory, the experimental oscillator strengths were determined and have been used to calculate the J–O intensity parameters. By using the J–O intensity parameters various radiative properties such as branching ratios (βR), measured branching ratios (βm), spontaneous emission transition probability (A), radiative transition rate (AT), radiative life time (τR), measured life time (τm), effective band-width (Δλp) and stimulated emission cross sections have been calculated for the various transitions of Dy3+: CdBiB glasses. The nature of the luminescence decay curves is also reported.
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